JPH0642699A - Hydrogen storage container - Google Patents

Abstract

PURPOSE:To provide a hydrogen storage container which can stores a large volume of hydrogen storage alloy while the heat transmission efficiency to the hydrogen storage alloy is high. CONSTITUTION:A plurality of pipes 4 are arranged in parallel with one another, piercing through opposite wall surfaces 2 of a flattened gas-tight container. Hydrogen storage alloy 7 is stored in the gas-tight container, and the pipes 4 are formed therein flow passages 8 for heat medium. A hydrogen feed and discharge port 5 is formed on the outer peripheral wall of the container.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydrogen storage device configured to raise the temperature of a hydrogen storage alloy to dissociate hydrogen from the alloy, and to a hydrogen storage container containing the hydrogen storage alloy.

[0002]

2. Description of the Related Art Conventionally, a hydrogen storage container for storing a hydrogen storage alloy is constructed of a small diameter pipe-shaped container having fins protruding from the outer peripheral surface thereof so as to efficiently obtain heat energy for hydrogen dissociation. When a large amount of hydrogen absorption / desorption is required, a plurality of pipe-shaped containers are arranged in parallel.

[0003]

However, when a plurality of pipe-shaped containers are arranged in parallel, each pipe-shaped container must be provided with a hydrogen supply / discharge port, and each hydrogen supply / discharge port must be connected to the header. There is a problem that the structure becomes complicated and the filling work of the hydrogen storage alloy into each pipe-shaped container becomes troublesome. The present invention has been made in view of such a point, and an object thereof is to provide a hydrogen storage container having a high heat transfer efficiency to the hydrogen storage alloy while capable of containing a large amount of hydrogen storage alloy. .

[0004]

In order to achieve the above-mentioned object, the present invention is to form a hydrogen storage container by a flat airtight container in which a plurality of pipes are arranged in a state of penetrating wall surfaces facing each other, The air-tight container is filled with a hydrogen storage alloy, the inside of each pipe is formed as a heat medium flow passage, and a hydrogen supply / discharge port is formed on the outer peripheral wall of the air-tight container.

[0005]

In the present invention, the hydrogen storage container is formed of a flat airtight container in which a plurality of pipes are arranged so as to penetrate through the wall surfaces facing each other, and the hydrogen storage alloy is filled in the airtight container and each pipe is filled. Since the inside of the container is formed as a heat medium flow passage and the hydrogen supply / discharge port is formed on the outer peripheral wall of the airtight container, it is possible to shorten the distance between the hydrogen storage alloy filled in the container and the heat transfer surface. Thus, heat transfer to the hydrogen storage alloy can be efficiently performed. Further, since the pipe arranged in a state of penetrating the facing surfaces of the flat container acts as a reinforcing material for reinforcing the outer structure of the container, even if the outer structure member is formed thin, the strength of the entire container is improved. It can be sufficiently retained and the heat exchange efficiency can be improved.

[0006]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The drawings show an embodiment of the present invention, FIG. 1 is a perspective view with a part cut away, FIG. 2 is a front view, and FIG. 3 is a central longitudinal side view. In this hydrogen storage container, both ends of a body part (1) formed in an elliptical short cylinder are closed by side walls (2) to form an airtight container body (3). ), A plurality of pipes (4) are arranged at appropriate intervals in parallel with the axis of the body, and both ends of each pipe (4) are connected to the container body (3).
The side wall (2) is penetrated to form a hydrogen supply / discharge port (5) and a thermocouple mounting port (6) for temperature measurement in the body (1).

Then, the container body (3) is filled with a granular hydrogen storage alloy (7) such as a zirconium-manganese alloy. Further, since the pipe (4) arranged so as to penetrate both side walls of the container body (3) is open to the outside of the container body (3), the internal space of the pipe (4) is a flow passage for the heat medium.
It becomes (8).

Further, since the pipe (4) is arranged so as to penetrate both side walls of the container body (3), the pipe (4) is
Since (4) acts as a reinforcing member, it is possible to reduce the plate thickness of the body portion (1) and the side wall (2) which are the outer shell structure. As a result, the heat transfer in the outer shell structure becomes good, and the heat exchange rate can be increased.

In the hydrogen storage container configured as described above, when hot air of, for example, 100 ° C. is blown from a blower fan arranged so as to face one side wall (2) of the container body (3), the hot air is blown into the container. It flows along the outer circumference of the body (1) of the main body (3), flows inside each pipe (4), and reaches the other side surface of the container main body (3). At this time, the temperature of the hydrogen storage alloy (7) filled in the container body (3) rises to about 80 to 90 ° C., and the hydrogen stored in the hydrogen storage alloy (7) dissociates, Hydrogen can be taken out from the hydrogen supply / discharge port (5).

When hydrogen is stored in the hydrogen absorbing alloy (7), the hydrogen supply / discharge port (3) is immersed in a water tank of cold water or is operated with low temperature air. 5)
Hydrogen is supplied into the container body (3). At this time, the temperature inside the container body (5) rises due to the hydrogen storage action of the hydrogen storage alloy (7), but since the container body (5) is water-cooled or air-cooled, the heat is cooling water or cooling water. By heat exchange with the wind, the product temperature of the hydrogen storage alloy (7) is maintained at about 14 to 18 ° C.

[0011]

According to the present invention, the hydrogen storage container is formed of a flat airtight container in which a plurality of pipes are arranged so as to penetrate through the opposite wall surfaces, and the hydrogen storage alloy is filled in the airtight container. Since the inside of each pipe is formed as a heat medium flow passage and the hydrogen supply / discharge port is formed on the outer peripheral wall of the airtight container, even a large container with a large amount of storage alloy is formed as a single container It is possible to provide a high-capacity hydrogen storage container with a simple structure by omitting complicated connecting pipes.

Further, since a plurality of pipes are arranged at a predetermined pitch so as to penetrate the facing surfaces of the flat container, the distance between the hydrogen storage alloy filled in the container and the heat transfer surface is shortened. As a result, heat transfer to the hydrogen storage alloy can be efficiently performed.

Further, since the plurality of pipes arranged so as to penetrate the facing surfaces of the flat container act as a reinforcing material for reinforcing the outer structure of the container, even if the outer structure member is made thin, the container is made thin. The strength as a whole can be sufficiently maintained, and the heat exchange efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a perspective view with a part of a hydrogen storage container cut away.

FIG. 2 is a front view of a hydrogen storage container.

FIG. 3 is a central longitudinal side view of a hydrogen storage container.

[Explanation of symbols]

2 ... wall of container, 4 ... pipe,
5 ... Hydrogen supply / discharge port, 7 ... Hydrogen storage alloy, 8 ... Heat medium flow passage.

Claims (1)

[Claims] 1. A plurality of pipes (4) are arranged in a state of penetrating opposite wall surfaces (2) of a flat airtight container, and the hydrogen storage alloy (7) is filled in the airtight container. A hydrogen storage container in which the inside of each pipe (4) is formed as a heat medium flow passage (8) and a hydrogen supply / discharge port (5) is formed on the outer peripheral wall of the airtight container.